Arduino Mega 2560 Project 3: Passive Buzzer module

Introduction:
We can use Arduino to make many interactive works of which the most commonly seen is acoustic-optic display. All the previous experiment has something to do with LED. However, the circuit in this experiment can produce sound. Normally, the experiment is done with a buzzer or a speaker while buzzer is simpler and easier to use. The buzzer we introduced here is a passive buzzer. It cannot be actuated by itself, but by external pulse frequencies. Different frequencies produce different sounds. We can use Arduino to code the melody of a song, which is actually quite fun and simple.
Specification:

• Working voltage: 3.3-5v
• Interface type: digital
• Size: 30*20mm
• Weight: 4g

Connection Diagram:

Sample Code:

int buzzer=8;//set digital IO pin of the buzzer
void setup() 
{ 
pinMode(buzzer,OUTPUT);// set digital IO pin pattern, OUTPUT to be output 
} 
void loop() 
{ unsigned char i,j;//define variable
while(1) 
{ for(i=0;i<80;i++)// output a frequency sound
{ digitalWrite(buzzer,HIGH);// sound
delay(1);//delay1ms 
digitalWrite(buzzer,LOW);//not sound
delay(1);//ms delay 
} 
for(i=0;i<100;i++)// output a frequency sound
{ 
digitalWrite(buzzer,HIGH);// sound
digitalWrite(buzzer,LOW);//not sound
delay(2);//2ms delay 
} } } 

 After downloading the program, buzzer experiment will been finished.

Project List

• Arduino Mega 2560 Project 1: Piranha LED Module
• Arduino Mega 2560 Project 2:Digital white LED module
• Arduino Mega 2560 Project 3: Passive Buzzer module
• Arduino Mega 2560 Project 4: Hall Magnetic Sensor
• Arduino Mega 2560 Project 5: LM35 Linear Temperature Sensor
• Arduino Mega 2560 Project 6: DS18B20 Temperature Sensor
• Arduino Mega 2560 Project 7: Digital Tilt Sensor
• Arduino Mega 2560 Project 8: Photocell sensor
• Arduino Mega 2560 Project 9: Digital Push Button
• Arduino Mega 2560 Project 10: Capacitive Touch Sensor
• Arduino Mega 2560 Project 11: DHT11 Temperature and Humidity Sensor
• Arduino Mega 2560 Project 12: Analog Sound Sensor
• Arduino Mega 2560 Project 13: Flame Sensor
• Arduino Mega 2560 Project 14: DS3231 Clock Module
• Arduino Mega 2560 Project 15: Analog Gas Sensor
• Arduino Mega 2560 Project 16: Analog Alcohol Sensor
• Arduino Mega 2560 Project 17: Water Sensor
• Arduino Mega 2560 Project 18: Soil Humidity Sensor
• Arduino Mega 2560 Project 19: Infrared Obstacle Avoidance Sensor
• Arduino Mega 2560 Project 20: PIR Motion Sensor
• Arduino Mega 2560 Project 21: Joystick Module
• Arduino Mega 2560 Project 22: Photo interrupter module
• Arduino Mega 2560 Project 23: 5V Relay Module
• Arduino Mega Project 24: ADXL345 Three Axis Acceleration Module
• Arduino Mega 2560 Project 25: Rotary Encoder module
• Arduino Mega 2560 Project 26: Analog Rotation Sensor
• Arduino Mega 2560 Project 27: HC-SR04 Ultrasonic Sensor
• Arduino Mega 2560 Project 28: Pulse Rate Monitor
• Arduino Mega 2560 Project 29: Reed Switch Module
• Arduino Mega 2560 Project 30: TEMT6000 ambient light sensor